Re: [GIT PULL] tracing: Fixes and clean ups for v5.14

From: Randy Dunlap
Date: Thu Aug 12 2021 - 14:04:46 EST


On 8/12/21 10:54 AM, Linus Torvalds wrote:
On Thu, Aug 12, 2021 at 7:33 AM Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

That was my take too, when this was first addressed:

https://lore.kernel.org/lkml/20210730204050.46975ae2@xxxxxxxxxxxxxxxx/


The commit message talks about "some compilers/analyzers" without any
explanation, and the "Link:" thing doesn't link to anything useful
either.

Yes, Steven wanted to use -Wno-main or whatever it is called from
the start.

I should have added the above link. :-/

Even the above link doesn't explain it to me.

What is it that gives this crazy garbage warning?

Some tool called gcc.

It looks like Randy Dunlap compiles with the '-Wmain' flag, and then
complains about it hurting.

I just used some default settings. I didn't choose to use -Wmain.

It's a classic case of "Doctor, doctor, it hurts when I hit myself in
the head with an ice pick".

The solution is not to take some Ibuprofen.

The solution is DON'T DO THAT THEN.

People who build with W=2 or some other crazy thing need to understand
that the bad warnings it exposes are not kernel problems, they are
THEIR problems.

Nah, it's a tooling problem.

--
~Randy